• Check Engine Light is on
• Erratic vehicle behavior
• Loss of communication with certain vehicle functions
• Faulty control module
• Wiring issues in the CAN bus
• Software glitches in one of the modules
CAN bus: A robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer.
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosis and reporting.
• U0100
• U0140
This code means that your car's computer received a message from another part of the car that it didn't understand. It's like getting a text message in a language you don't know.
The vehicle's control module has received an invalid data message from another module.
U0455 is a communication error code indicating that one of the vehicle's control modules has received data from another module that it cannot process. This often involves the CAN (Controller Area Network) bus system, which is responsible for communication between different modules in the vehicle.
• Check for other related codes
• Inspect the CAN bus wiring and connectors
• Use a scan tool to identify the module causing the issue
• Repair or replace faulty wiring
• Reprogram or replace the faulty module
• Clear the codes and test drive the vehicle
• OBD-II scanner
• Multimeter
• CAN bus diagnostic tool
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain vehicle wiring
• Ensure software updates are performed
• Avoid aftermarket modifications that interfere with the CAN bus
Communication Error
• Do not ignore the Check Engine Light
• Consult a professional if you're unsure about repairs
Check with your vehicle manufacturer for warranty coverage on control modules.
U0455 has been a common issue in vehicles with complex electronic systems, often caused by CAN bus communication errors.
Moderate – While the vehicle may still be drivable, unresolved communication issues can lead to more significant problems.
Ignoring communication errors can lead to safety issues if critical systems are affected. Always address error codes promptly.
• Vehicle must be running
• All modules should be powered
The affected module is typically located in the vehicle's dashboard or engine bay, depending on the system involved.
Q: Can I drive my car with a U0455 code?
A: It's possible to drive, but it's not recommended. Communication issues can affect vehicle performance and safety.
Q: How do I reset a U0455 code?
A: Use an OBD-II scanner to clear the code, but ensure the underlying issue is fixed to prevent it from returning.
